Experimental Requirements for the Determination of Kinetics and Mechanism for Decomposition Reactions of Solids

1980 ◽  
pp. 63-68
Author(s):  
A. Reller ◽  
H. R. Oswald
Keyword(s):  
Kinetics And Mechanism ◽  
Decomposition Reactions

Kinetics and mechanism of redox reactions of U(III) ions with monochloroacetic and dichloroacetic acids

1979 ◽  
Vol 44 (2) ◽  
pp. 401-405 ◽  
Author(s):  
Ľubica Adamčíková ◽  
Ľudovít Treindl
Keyword(s):  
Redox Reactions ◽  
Reaction Rate ◽  
Activation Parameters ◽  
Outer Sphere ◽  
Alcohol Concentration ◽  
Kinetics And Mechanism ◽  
Solvent Structure ◽  
Influence Of Ph ◽  
Sphere Mechanism

The kinetics and mechanism of the redox reactions of U3+ ions with mono- and dichloroacetic acids were studied. The influence of pH was observed mainly in the second case and led to the determination of the rate constants and activation parameters corresponding to two parallel steps, namely oxidation of U3+ with CHCl2COO- ions and oxidation of U3+ with CHCl2.COOH molecules. The influence of binary mixtures of water with methanol, ethanol, isopropanol, or tert-butenol on the reaction rate was followed. Increasing alcohol concentration influences the rate constant not only through changing dielectric constant and solvation of the reactants but also through a change of the solvent structure which plays a role in reactions with an outer sphere mechanism of the electron transfer.

scholarly journals Kinetics and Mechanism of Hydrolysis of Acetylthiocholine by Butyrylcholine Esterase

2002 ◽  
Vol 57 (11-12) ◽  
pp. 1072-1077 ◽  
Author(s):  
Karel Komers ◽  
Alexandr Čegan ◽  
Marek Link
Keyword(s):  
Acetic Acid ◽  
Kinetics And Mechanism ◽  
Kinetics Parameters ◽  
Mechanism Of Hydrolysis ◽  
Ph Stat ◽  
Stat Method ◽  
Ellman’S Method ◽  
Hydrolysis Of

Kinetics and mechanism of hydrolysis of acetylthiocholine by the enzyme butyrylcholine esterase was studied. The spectrophotometric Ellman’s method and potentiometric pH-stat method were used for continuous determination of the actual concentration of the products thiocholine and acetic acid in the reaction mixture. The validity of the Michaelis-Menten (Briggs-Haldane) equation in the whole course of the reaction under used conditions was proved. The corresponding kinetics parameters (Vm and KM) were calculated from the obtained dependences of concentration of thiocholine or acetic acid vs. time and compared. From this comparison the deciding kinetic role of the step producing thiocholine was derived. The values of initial molar concentration of the enzyme and of the rate constants of the kinetic model were estimated.

scholarly journals Neptunium(iv)-hydroxamate complexes: their speciation, and kinetics and mechanism of hydrolysis

2019 ◽  
Vol 48 (2) ◽  
pp. 673-687 ◽  
Author(s):  
S. Edwards ◽  
F. Andrieux ◽  
C. Boxall ◽  
M. J. Sarsfield ◽  
R. J. Taylor ◽  
...  
Keyword(s):  
Kinetics And Mechanism ◽  
Nuclear Reprocessing ◽  
Mechanism Of Hydrolysis ◽  
Time Determination ◽  
First Time ◽  
Hydrolysis Of

First time determination of rate parameters for hydrolysis of mono- and bis-acetohydroxamatoneptunium(iv) complexes under conditions relevant to nuclear reprocessing.

Kinetics and Mechanism of Steady-State Catalytic NO Decomposition Reactions on Cu–ZSM5

2002 ◽  
Vol 209 (1) ◽  
pp. 75-86 ◽  
Author(s):  
Björn Modén ◽  
Patrick Da Costa ◽  
Benjamin Fonfé ◽  
Deuk Ki Lee ◽  
Enrique Iglesia
Keyword(s):  
Steady State ◽  
Kinetics And Mechanism ◽  
No Decomposition ◽  
Decomposition Reactions
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